Glossary of Terms
Active leaf
The door on a double door set that is the first to be opened.
Anti-crush reinforcers
Reinforcing steel-work strategically positioned to prevent crushing and to strengthen areas particularly vulnerable to attack.
Anti-lever protection
Strategic positioning of cover plates and reinforcer to prevent levering from manual attack devices.
Attack resistant
Designed to resist typical attack points made by the average intruder, using normal equipment.
Corrosion resistance
Offering resistance against corrosion. ie. electro zinc coating to protect the underlying steel.
Cylinder
A component part of a lock which accepts the key, held on by a cylinder ring secured internally by screws.
Cover plate
A reinforced strip, the length on the leading edge of the door to cover the gap between leaf and frame (or leaf and leaf on a double).
Dog Bolts
Case hardened steel dowels strategically positioned for extra security.
Electro-zinc coated
Coating used on mild steel to increase corrosion resistance.
Escape handle
Part of a panic exit system shaped as a handle where more commonly a bar would be used.
Etch Primer
Primer paint with special adhesion properties for use on coated steel.
External access
Gaining entrance through a door set from the outside by means of a key or electronic device.
Fire rating
Having been tested in accordance with BS EN 1634-1: 2008, and given classification reflecting the resistance achieved in time.
Handling
Which side the door is hung (hinged), as viewed with the door opening towards you (see diagram below).


Right hand hung/Outward opening


Left hand hung/Outward opening


Left hand hung/Inward opening


Right hand hung/Inward opening
Inactive or Passive leaf
The door on a double door set that is the second to be opened.
Leading edge
The edge of the door leaf farthest from the hinge side.
Loss Prevention Certification Board
Part of BRE Certification Ltd. within the Foundation for the built Environment (FBE) . The LPCB operates product certification for fire and security products and services.
LPS 1175
Specification for testing and classifying the burglary resistance of building components.
Manganese Steel
A hardened steel sheet material incorporating manganese which makes it almost impossible to drill through.
Outward opening
When viewing the door from the outside the door would open towards you.
Panic bar
A device to give emergency exit from a door set by retracting it’s locking mechanism when pushed.
Push pad
A rectangular shaped pad which activates a panic escape system where more commonly a bar would be used.
Security rated
Having been tested and evaluated to LPS 1175 and given a security rating by the Loss Prevention Certification Board.
Three point locking
A bolting system which secures the leaf into the frame in three places, normally top, bottom and centrally on the leading edge. Auto bolting systems include catches and triggers to automatically re-secure in these places when the door is closed, without manually resetting the device.
Two point locking
A bolting system which secures the leaf into the frame in two places, normally top and bottom on the leading edge. Auto bolting systems include catches and triggers to automatically re-secure in these places when the door is closed, without manually resetting the device.
Uncertified
A door configuration containing elements outside the scope of the certification.